13908919 has 2 divisors, whose sum is σ = 13908920. Its totient is φ = 13908918.

The previous prime is 13908911. The next prime is 13908959. The reversal of 13908919 is 91980931.

It is an a-pointer prime, because the next prime (13908959) can be obtained adding 13908919 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13908919 - 2³ = 13908911 is a prime.

It is a super-2 number, since 2×13908919² = 386916055497122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13908911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6954459 + 6954460.

It is an arithmetic number, because the mean of its divisors is an integer number (6954460).

Almost surely, 2^13908919 is an apocalyptic number.

13908919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13908919 is an equidigital number, since it uses as much as digits as its factorization.

13908919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 13908919 is about 3729.4663157079. The cubic root of 13908919 is about 240.4904265563.

The spelling of 13908919 in words is "thirteen million, nine hundred eight thousand, nine hundred nineteen".